--Energy giant Exxon Mobil Corp. (XOM) told the U.S. Environmental Protection Agency it should retain methane-gas-emission rules from the Obama administration, Reuters reported Tuesday, citing a copy of the letter seen by Reuters.

re: "cash trade"...nothing to do with cash or margin account-rather it pertains to a settlement modifier assigned to the trade when reported---it stands for "same day settlement"...

Quote:(B) Settlement Modifiers If a transaction is to be settled other than the regular way, report the settlement terms by selecting the appropriate modifier. If the parties agree to settlement on the same day the transaction is executed (i.e., cash settlement), select the modifier, ".c."